JPH097900A - Electrolytic capacitor - Google Patents
Electrolytic capacitorInfo
- Publication number
- JPH097900A JPH097900A JP17449195A JP17449195A JPH097900A JP H097900 A JPH097900 A JP H097900A JP 17449195 A JP17449195 A JP 17449195A JP 17449195 A JP17449195 A JP 17449195A JP H097900 A JPH097900 A JP H097900A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- electrolytic capacitor
- sealing member
- capacitor element
- rubber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/13—Energy storage using capacitors
Landscapes
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、電解コンデンサ、特に
駆動用電解液のガスの透過を防止する封口部材を用いた
電解コンデンサに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrolytic capacitor, and more particularly to an electrolytic capacitor using a sealing member for preventing gas permeation of a driving electrolytic solution.
【０００２】[0002]
【従来の技術】一般に電解コンデンサは、図８に示すよ
うに、高純度アルミニウム箔からなる一対の陽極箔と陰
極箔にそれぞれリード線端子２１を接続し、前記の陽極
箔と陰極箔との間にコンデンサ紙を介在させ、これらを
巻回してコンデンサ素子２２を構成していた。このコン
デンサ素子２２に駆動用電解液を含浸し、前記リード線
端子２１を弾性体からなる封口部材２３に挿入した後、
有底筒状のアルミニウムケース２４に収容し密閉してい
た。2. Description of the Related Art Generally, in an electrolytic capacitor, as shown in FIG. 8, lead wire terminals 21 are connected to a pair of anode foil and cathode foil made of high-purity aluminum foil, respectively. Capacitor paper was interposed between the two, and these were wound to form the capacitor element 22. After the capacitor element 22 is impregnated with a driving electrolytic solution and the lead wire terminal 21 is inserted into a sealing member 23 made of an elastic body,
It was housed in a bottomed tubular aluminum case 24 and sealed.
【０００３】このような構成において、前記封口部材２
３にはエチレンプロピレンターポリマーやブチルゴムな
どが用いられている。しかしながら、エチレンプロピレ
ンターポリマーからなる封口部材の場合は、駆動用電解
液の組成によっては電解液が封口部材を透過して蒸発飛
散する問題点があり、ブチルゴムの場合もエチレンプロ
ピレンターポリマーの場合よりは透過する電解液は少な
いが、やはり蒸発飛散を防止することはできなかった。In such a structure, the sealing member 2
Ethylene propylene terpolymer, butyl rubber, etc. are used for 3. However, in the case of the sealing member made of ethylene propylene terpolymer, there is a problem that the electrolytic solution permeates through the sealing member and evaporates and scatters depending on the composition of the driving electrolytic solution. Although the electrolyte solution that permeated was small, it was still impossible to prevent the evaporation and scattering.
【０００４】この電解液の透過による蒸発飛散を防止す
るために、例えば実開昭５５−２２１０７号公報に記載
のように、ゴムにポリプロピレン、ポリエステル、エポ
キシ、ポリテトラフロロエチレン等の樹脂を張り合わせ
た封口部材を使用した電解コンデンサも提案されてい
る。In order to prevent evaporation and scattering due to the permeation of the electrolytic solution, for example, as described in Japanese Utility Model Publication No. 55-22107, rubber is laminated with a resin such as polypropylene, polyester, epoxy or polytetrafluoroethylene. An electrolytic capacitor using a sealing member has also been proposed.
【０００５】しかしながら、このような電解コンデンサ
では、ゴムとポリプロピレン、ポリエステル、エポキ
シ、ポリテトラフロロエチレン等の樹脂の張り合わせに
おいてこれらの樹脂の接着性の問題から完全な接着が得
られず、封口部材をケースに挿入するときや、密閉時の
ケース胴体部の押圧によって接着面が剥離し、樹脂を接
着した効果を得ることができなかった。However, in such an electrolytic capacitor, when the rubber and the resin such as polypropylene, polyester, epoxy, polytetrafluoroethylene, etc. are stuck together, complete adhesion cannot be obtained due to the problem of adhesiveness of these resins, and the sealing member is The adhesive surface was peeled off by the pressing of the case body portion when it was inserted into the case or when it was sealed, and the effect of adhering the resin could not be obtained.
【０００６】[0006]
【発明が解決しようとする課題】本発明では、駆動用電
解液の透過量を抑制して蒸発飛散を防止し、ケース内に
おける電解液の減少を抑制することによって、長寿命で
高信頼性の電解コンデンサを提供することを目的とした
ものである。SUMMARY OF THE INVENTION According to the present invention, the permeation amount of the driving electrolyte solution is suppressed to prevent evaporation and scattering, and the decrease of the electrolyte solution in the case is suppressed, thereby providing a long life and high reliability. It is intended to provide an electrolytic capacitor.
【０００７】[0007]
【課題を解決するための手段】本発明になる電解コンデ
ンサにおいて、請求項１記載の発明は、封口部材がコン
デンサ素子側に配された水素ガスを透過しない又はしに
くい材質からなる一層目と、電解コンデンサの外面側に
配された弾性を有する材料からなる二層目との二層構造
からなり、コンデンサ素子側に配した一層目の外径が電
解コンデンサの外面側に配された二層目の外径より０．
２ｍｍ以上大きいことを特徴とする。In the electrolytic capacitor according to the present invention, the invention according to claim 1 is characterized in that the sealing member is made of a material which does not or does not easily permeate hydrogen gas disposed on the capacitor element side, The outer layer of the electrolytic capacitor has a two-layer structure with a second layer made of a material having elasticity, and the outer diameter of the first layer on the capacitor element side is the second layer on the outer surface of the electrolytic capacitor. From the outer diameter of 0.
It is characterized by being larger than 2 mm.
【０００８】請求項２記載の発明は、請求項１における
一層目の材料がふっ素系樹脂からなることを特徴とす
る。The invention according to claim 2 is characterized in that the material of the first layer in claim 1 is made of a fluororesin.
【０００９】請求項３記載の発明は、請求項１又は請求
項２におけるふっ素系樹脂がポリテトラフルオロエチレ
ン、テトラフルオロエチレンとエチレンとの共重合体、
テトラフルオロエチレンとヘキサフルオロプロピレンと
の共重合体、テトラフルオロエチレンとパーフルオロア
ルキルビニルエーテルとの共重合体、ポリビニルフルオ
ライド、ポリビニリデンフルオライド、ポリクロロトリ
フルオロエチレン、クロロトリフルオロエチレンとエチ
レンとの共重合体であることを特徴とする。According to a third aspect of the present invention, the fluorine-based resin according to the first or second aspect is polytetrafluoroethylene, a copolymer of tetrafluoroethylene and ethylene,
Copolymer of tetrafluoroethylene and hexafluoropropylene, copolymer of tetrafluoroethylene and perfluoroalkyl vinyl ether, polyvinyl fluoride, polyvinylidene fluoride, polychlorotrifluoroethylene, chlorotrifluoroethylene and ethylene It is characterized by being a copolymer.
【００１０】請求項４記載の発明は、請求項１〜請求項
３のいずれかに記載の一層目の材料の厚さが０．５ｍｍ
以上であることを特徴とする。According to a fourth aspect of the invention, the thickness of the first layer material according to any one of the first to third aspects is 0.5 mm.
It is characterized by the above.
【００１１】請求項５記載の発明は、請求項１〜請求項
４のいずれかに記載の一層目の材料の外周面がコンデン
サ素子側から０．５ｍｍ以上の面取り又は円弧が形成さ
れていることを特徴とする。According to a fifth aspect of the present invention, the outer peripheral surface of the material of the first layer according to any one of the first to fourth aspects has a chamfer or an arc of 0.5 mm or more from the capacitor element side. Is characterized by.
【００１２】請求項６に記載の発明は、請求項１〜請求
項５のいずれかに記載の二層目の材料がエチレンプロピ
レンターポリマー、ブチルゴム、クロロプレンゴム、ニ
トリルゴム、天然ゴムであることを特徴とする。The invention according to claim 6 is that the material of the second layer according to any one of claims 1 to 5 is ethylene propylene terpolymer, butyl rubber, chloroprene rubber, nitrile rubber and natural rubber. Characterize.
【００１３】[0013]
【作用】以上のような構成からなる本発明では、封口部
材のコンデンサ素子側に水素ガスを透過しない又はしに
くいふっ素系樹脂を配し、その外径が電解コンデンサの
外面側に配された弾性を有するゴム等の外径より０．２
ｍｍ以上大きいことを特徴としているが、この封口部材
にふっ素系樹脂を用い、前記のようにその外径を規制す
ることによって、ケースの密閉性を高めることができる
と共に電解液の透過を抑制でき、よって蒸発飛散を防止
することができるので、高信頼性で、長寿命の電解コン
デンサを得ることができるのである。According to the present invention having the above-described structure, the sealing member is provided with the fluorine-containing resin which does not permeate hydrogen gas or which does not easily permeate hydrogen gas, on the side of the capacitor element, and the outer diameter of which is the elasticity of the outer surface of the electrolytic capacitor. 0.2 from the outer diameter of rubber, etc.
Although it is characterized by being larger than mm, by using a fluorine-based resin for this sealing member and regulating the outer diameter as described above, it is possible to enhance the hermeticity of the case and suppress the permeation of the electrolytic solution. Therefore, since it is possible to prevent evaporation and scattering, it is possible to obtain a highly reliable and long-life electrolytic capacitor.
【００１４】[0014]
実施例Ａ 以下、本発明の実施例について図面を参照しながら説明
する。試料の定格等は、定格１６Ｖ−３３０μＦ、サイ
ズ直径８ｍｍ×長さ１１．５ｍｍである。本実施例に用
いた封口部材１の正面図を図１に、平面図を図２に示す
が、組み立てたときにコンデンサ素子側に位置する一層
目２はポリテトラフルオロエチレン（以下ＰＴＦＥ）か
らなり、その外径７．５ｍｍ×厚さ１ｍｍで、その外周
面には０．５ｍｍの円弧を形成している。また電解コン
デンサの外面側に位置する二層目３は、ブチルゴム（以
下ＩＩＲ）からなり、外径７．２ｍｍ×厚さ２．５ｍｍ
で、さらに外径３ｍｍ×高さ１ｍｍの円形状の２か所が
欠けた突出段部４が形成されている。Example A Hereinafter, an example of the present invention will be described with reference to the drawings. The rating of the sample is a rating of 16V-330 μF, a size diameter of 8 mm and a length of 11.5 mm. The front view of the sealing member 1 used in this example is shown in FIG. 1 and the plan view is shown in FIG. 2. The first layer 2 located on the capacitor element side when assembled is made of polytetrafluoroethylene (hereinafter referred to as PTFE). The outer diameter is 7.5 mm and the thickness is 1 mm, and an arc of 0.5 mm is formed on the outer peripheral surface. The second layer 3 located on the outer surface side of the electrolytic capacitor is made of butyl rubber (hereinafter IIR) and has an outer diameter of 7.2 mm and a thickness of 2.5 mm.
In addition, a protruding step portion 4 having a circular shape with an outer diameter of 3 mm and a height of 1 mm is cut out at two places.
【００１５】図３にこの封口部材１を使用した電解コン
デンサの正断面図を示すが、５はコンデンサ素子、６は
リード線端子、７はケースである。この実施例と従来の
電解コンデンサとの特性を比較し、その作用効果を説明
する。それぞれ引き出し端子を接続した陽極箔と陰極箔
の間にコンデンサ紙を挟んで巻回してコンデンサ素子を
形成した。このコンデンサ素子に駆動用電解液を含浸
し、実施例では図１及び図２に示した封口部材１に設け
てある挿入孔に引き出し端子に接続されたリード線端子
６を挿入し、ケース７に収容した後、ケース７の開口端
縁を巻き締めると共に胴体部を押圧して封口部材１の二
層目３を圧縮して密閉した。従来例は、封口部材の実施
例における一層目２を設けないだけで、その他はすべて
実施例と同じ構成を有するものを使用した。なお、この
従来例の二層目の厚さ、すなわちＩＩＲの厚さは、実施
例の一層目の厚さを含んだ３．５ｍｍとした。FIG. 3 is a front sectional view of an electrolytic capacitor using the sealing member 1. Reference numeral 5 is a capacitor element, 6 is a lead wire terminal, and 7 is a case. The characteristics of this embodiment and the conventional electrolytic capacitor will be compared with each other to explain the operation and effect thereof. A capacitor element was formed by sandwiching a capacitor paper between an anode foil and a cathode foil to which lead terminals were connected, and winding the capacitor paper. This capacitor element is impregnated with a driving electrolytic solution, and in the embodiment, a lead wire terminal 6 connected to a lead terminal is inserted into an insertion hole provided in the sealing member 1 shown in FIGS. After housing, the opening edge of the case 7 was wound up and the body portion was pressed to compress and seal the second layer 3 of the sealing member 1. In the conventional example, only the first layer 2 in the example of the sealing member is not provided, and the other components have the same configuration as the example. The thickness of the second layer of the conventional example, that is, the thickness of IIR was set to 3.5 mm including the thickness of the first layer of the example.
【００１６】このようにして作製した電解コンデンサ各
２００個について１２５℃雰囲気中で定格電圧（１６
Ｖ）を３０００時間印加したときの試験時間に対する電
解液の減少量（△Ｗ）の関係を図４に、静電容量の減少
率（△Ｃ）との関係を図５に示す。この結果から明らか
なように、実施例は電解液の減少、及び静電容量の減少
率共に小さい。これは、封口部材１の一層目２として用
いたＰＴＦＥが電解液の透過を抑制すると共に、該一層
目２が二層目３よりも大きい外径を有しているためにケ
ース７の内壁に密着し、かつ、二層目３がコンデンサ素
子５側に露出することがないのでＩＩＲからの透過が無
くなり、電解液が一層目２に遮断されて透過しないため
である。For each of the 200 electrolytic capacitors manufactured in this way, the rated voltage (16
FIG. 4 shows the relationship between the decrease amount (ΔW) of the electrolytic solution and the decrease ratio (ΔC) of the electrostatic capacity with respect to the test time when V) is applied for 3000 hours. As is clear from this result, in the example, both the decrease of the electrolyte solution and the decrease rate of the capacitance are small. This is because the PTFE used as the first layer 2 of the sealing member 1 suppresses the permeation of the electrolytic solution, and since the first layer 2 has a larger outer diameter than the second layer 3, the inner wall of the case 7 is This is because the second layer 3 is in close contact and is not exposed to the capacitor element 5 side, so that permeation from the IIR is lost and the electrolytic solution is blocked by the first layer 2 and does not permeate.
【００１７】これに対し従来例は、図４、図５から明ら
かなように試験時間が２０００時間から静電容量が急激
に減少している。これは電解液が封口部材のＩＩＲを透
過して蒸発飛散しているためであり、電解液の減少に起
因するものである。On the other hand, in the conventional example, as is apparent from FIGS. 4 and 5, the electrostatic capacitance sharply decreases from the test time of 2000 hours. This is because the electrolytic solution passes through the IIR of the sealing member and evaporates and scatters, and is caused by the decrease in the electrolytic solution.
【００１８】実施例Ｂ 次に実施例Ａで述べた封口部材の一層目と二層目の外径
差について実験した結果を述べる。試料は定格３５Ｖ−
５６０μＦ、サイズは直径１２．５ｍｍ×長さ２０ｍｍ
の電解コンデンサ各１００個であり、一層目の外径と二
層目の外径との差（Ｄ１−Ｄ２）を種々変えて試作を行
った。これらの試料について１２５℃雰囲気中で定格電
圧（１６Ｖ）を３０００時間印加した後の電解液の減少
量（△Ｗ）を図６に示す。この結果、前記（Ｄ１−Ｄ
２）がマイナスの値であってもその効果は確認できる
が、この値が０以上、特に０．１ｍｍ以上の差があれば
その効果が大きい。Example B Next, the results of experiments on the difference in outer diameter between the first layer and the second layer of the sealing member described in Example A will be described. The sample is rated 35V-
560μF, size is 12.5mm diameter x 20mm length
100 electrolytic capacitors each, and various trial production was performed by changing the difference (D1-D2) between the outer diameter of the first layer and the outer diameter of the second layer. FIG. 6 shows the reduction amount (ΔW) of the electrolytic solution after applying the rated voltage (16 V) for 3000 hours in the atmosphere of 125 ° C. for these samples. As a result, (D1-D)
The effect can be confirmed even if 2) is a negative value, but if this value has a difference of 0 or more, particularly 0.1 mm or more, the effect is large.
【００１９】実施例Ｃ この実施例では、封口部材の一層目の厚さについて実験
した結果について述べる。試料は定格５０Ｖ−３３μ
Ｆ、サイズは直径６．３ｍｍ×長さ１１ｍｍの電解コン
デンサ各２０個であり、一層目の厚さを種々変えて実験
した。なお、一層目は材料がテトラフルオロエチレンと
エチレンとの共重合体（以下ＥＴＦＥ）で外径は５．８
ｍｍ、二層目は材料がＩＩＲでその外径は５．６ｍｍで
ある。これらの試料について１２５℃雰囲気中で定格電
圧（５０Ｖ）を３０００時間印加した後の電解液の減少
量（△Ｗ）を図７に示す。図７は、各試料の最大値、最
小値、平均値を示すが、０．１ｍｍの厚さからその効果
は認められるが、０．４ｍｍまでは結果にばらつきが大
きい。０．５ｍｍ以上になるとばらつきも小さくなり、
かつ電解液の減少量も少なくなり良好な結果を示してい
る。Example C In this example, the results of experiments on the thickness of the first layer of the sealing member will be described. Sample is rated 50V-33μ
F, the size is 20 electrolytic capacitors each having a diameter of 6.3 mm and a length of 11 mm, and various thicknesses of the first layer were changed for experiments. The material of the first layer is a copolymer of tetrafluoroethylene and ethylene (hereinafter referred to as ETFE), and the outer diameter is 5.8.
The second layer has a material of IIR and an outer diameter of 5.6 mm. FIG. 7 shows the reduction amount (ΔW) of the electrolytic solution after applying the rated voltage (50 V) for 3000 hours in the atmosphere of 125 ° C. for these samples. FIG. 7 shows the maximum value, the minimum value, and the average value of each sample. The effect can be recognized from the thickness of 0.1 mm, but the results vary widely up to 0.4 mm. When it is 0.5 mm or more, the variation becomes small,
In addition, the amount of decrease in the electrolytic solution is also small, showing a good result.
【００２０】実施例Ｄ 本発明では、電解液の透過による蒸発飛散を防止するた
めに、封口部材の一層目とケース内壁との嵌合はきつく
行う必要があり、したがって作業上の容易さ、発生する
作業不良も課題となる。この実施例では、作業の容易さ
や、製造工程において発生する作業不良との関係につい
て実験した結果を述べる。試料は定格２５Ｖ−１０μ
Ｆ、サイズは直径５ｍｍ×長さ１１ｍｍの電解コンデン
サ各１０００個であり、一層目の材料をＰＴＦＥとし外
径４．５ｍｍ×厚さ１ｍｍ、二層目の材料をＩＩＲとし
外径４．３ｍｍ×２．５ｍｍを用い、一層目の外周面に
コンデンサ素子側から表１に示すような種々の面取り、
及び円弧を形成したものを用いて電解コンデンサを作製
したときの工程不良率について述べる。不良は、封口部
材の一層目が斜めになったり、ケースの規定の位置まで
入っていない状態でケース開口端縁の巻き締めや胴体部
の押圧が成されたもの、ケースに収容できなかったなど
である。表１から明らかなように、面取り及び円弧を設
けないもの〜０．４ｍｍまでは不良の発生が認められる
が、０．５ｍｍ以上では不良発生は皆無であった。これ
は一層目に形成した面取り又は円弧により、ケースへの
収納作業に際し、ケースにスムーズに収納することがで
きたためである。Embodiment D In the present invention, in order to prevent evaporation and scattering due to the permeation of the electrolytic solution, it is necessary to tightly fit the first layer of the sealing member and the inner wall of the case. Poor work is also an issue. In this embodiment, the result of an experiment on the easiness of work and the relationship with work failure occurring in the manufacturing process will be described. The sample is rated 25V-10μ
F, size is 5 mm in diameter x 11 mm in length, each is 1000 electrolytic capacitors, the material of the first layer is PTFE and the outer diameter is 4.5 mm x thickness of 1 mm, and the material of the second layer is IIR and the outer diameter is 4.3 mm x Using 2.5 mm, various chamfers as shown in Table 1 from the capacitor element side on the outer peripheral surface of the first layer,
And, the process defect rate when an electrolytic capacitor is manufactured using the one in which a circular arc is formed will be described. Defective products include the case where the first layer of the sealing member is slanted, the case opening edge has been tightened or the body part has been pressed when it has not reached the specified position of the case, or it could not be accommodated in the case. Is. As is clear from Table 1, the occurrence of defects was observed in the case of no chamfering and arcing up to 0.4 mm, but no occurrence of defects in 0.5 mm or more. This is because the chamfer or the arc formed on the first layer allows the case to be smoothly stored in the case during the storing work.
【００２１】[0021]
【表１】 [Table 1]
【００２２】なお、上記実施例では一層目のふっ素系樹
脂としてＰＴＦＥ、ＥＴＦＥ、二層目の弾性体としてＩ
ＩＲを用いた場合について述べたが、ふっ素系樹脂とし
てテトラフルオロエチレンとヘキサフルオロプロピレン
との共重合体、テトラフルオロエチレンとパーフルオロ
アルキルビニルエーテルとの共重合体、ポリビニルフル
オライド、ポリビニリデンフルオライド、ポリクロロト
リフルオロエチレン、クロロトリフルオロエチレンとエ
チレンとの共重合体、弾性体としてエチレンプロピレン
ターポリマー、クロロプレンゴム、ニトリルゴム、天然
ゴムを使用しても同様の効果を得ることができる。In the above embodiment, PTFE and ETFE were used as the first layer of fluorocarbon resin, and I was used as the second layer of elastic material.
Although the case of using IR was described, a copolymer of tetrafluoroethylene and hexafluoropropylene as a fluorine-based resin, a copolymer of tetrafluoroethylene and perfluoroalkyl vinyl ether, polyvinyl fluoride, polyvinylidene fluoride, The same effect can be obtained by using polychlorotrifluoroethylene, a copolymer of chlorotrifluoroethylene and ethylene, and ethylene propylene terpolymer, chloroprene rubber, nitrile rubber, or natural rubber as the elastic body.
【００２３】[0023]
【発明の効果】本発明によれば、コンデンサ素子を収容
密閉したケースから蒸発飛散による駆動用電解液の減少
を抑制することによって、長寿命で高信頼性の電解コン
デンサを提供することができる。According to the present invention, it is possible to provide a long-life and highly reliable electrolytic capacitor by suppressing a decrease in the driving electrolytic solution due to evaporation and scattering from the case in which the capacitor element is enclosed and sealed.
【図１】本発明の封口部材の一実施例を示す正面図。FIG. 1 is a front view showing an embodiment of a sealing member of the present invention.
【図２】本発明の封口部材の一実施例を示す平面図。FIG. 2 is a plan view showing an embodiment of the sealing member of the present invention.
【図３】本発明になる電解コンデンサを示す正断面図。FIG. 3 is a front sectional view showing an electrolytic capacitor according to the present invention.
【図４】１２５℃中で定格電圧印加したときの試験時間
と電解液の減少量を示す曲線図。FIG. 4 is a curve diagram showing a test time and a decrease amount of an electrolytic solution when a rated voltage is applied at 125 ° C.
【図５】１２５℃中で定格電圧印加したときの試験時間
と静電容量の減少率を示す曲線図。FIG. 5 is a curve diagram showing a test time and a rate of decrease in capacitance when a rated voltage is applied at 125 ° C.
【図６】１２５℃中で定格電圧印加したときの一層目と
二層目の外径差と電解液の減少量を示す曲線図。FIG. 6 is a curve diagram showing the difference in outer diameter between the first layer and the second layer and the amount of decrease in the electrolytic solution when a rated voltage is applied at 125 ° C.
【図７】１２５℃中で定格電圧印加したときの一層目の
厚さと電解液の減少量を示す曲線図。FIG. 7 is a curve diagram showing the thickness of the first layer and the amount of decrease in the electrolytic solution when a rated voltage is applied at 125 ° C.
【図８】従来の電解コンデンサを示す正断面図。FIG. 8 is a front sectional view showing a conventional electrolytic capacitor.
１…封口部材 ２…封口部材の一層目 ３…封口部材の二層目 ４…封口部材の突出段部 ５…コンデンサ素子 ６…リード線端子 ７…ケース DESCRIPTION OF SYMBOLS 1 ... Sealing member 2 ... First layer of sealing member 3 ... Second layer of sealing member 4 ... Projected step portion of sealing member 5 ... Capacitor element 6 ... Lead wire terminal 7 ... Case
Claims (6)
端子を封口部材に挿入し、このコンデンサ素子及び封口
部材をケースに収容して密閉した電解コンデンサにおい
て、前記封口部材がコンデンサ素子側に配された水素ガ
スを透過しない又はしにくい材質からなる一層目と電解
コンデンサの外面側に配された弾性を有する材料からな
る二層目との二層構造からなり、コンデンサ素子側に配
した一層目の外径が電解コンデンサの外面側に配された
二層目の外径より０．２ｍｍ以上大きいことを特徴とす
る電解コンデンサ。1. An electrolytic capacitor in which a lead wire terminal drawn out from a capacitor element is inserted into a sealing member, and the capacitor element and the sealing member are housed and sealed in a case, wherein the sealing member is arranged on the capacitor element side. The outer diameter of the first layer placed on the capacitor element side, which has a two-layer structure consisting of a first layer made of a material that does not allow gas to permeate or is hard to pass through and a second layer made of an elastic material that is placed on the outer surface side of the electrolytic capacitor. Is larger than the outer diameter of the second layer arranged on the outer surface side of the electrolytic capacitor by 0.2 mm or more.
とを特徴とする請求項１に記載の電解コンデンサ。2. The electrolytic capacitor according to claim 1, wherein the material of the first layer is a fluororesin.
レン、テトラフルオロエチレンとエチレンとの共重合
体、テトラフルオロエチレンとヘキサフルオロプロピレ
ンとの共重合体、テトラフルオロエチレンとパーフルオ
ロアルキルビニルエーテルとの共重合体、ポリビニルフ
ルオライド、ポリビニリデンフルオライド、ポリクロロ
トリフルオロエチレン、クロロトリフルオロエチレンと
エチレンとの共重合体であることを特徴とする請求項１
又は請求項２に記載の電解コンデンサ。3. The fluororesin is polytetrafluoroethylene, a copolymer of tetrafluoroethylene and ethylene, a copolymer of tetrafluoroethylene and hexafluoropropylene, and a copolymer of tetrafluoroethylene and perfluoroalkyl vinyl ether. 2. A compound, polyvinyl fluoride, polyvinylidene fluoride, polychlorotrifluoroethylene, or a copolymer of chlorotrifluoroethylene and ethylene.
Alternatively, the electrolytic capacitor according to claim 2.
あることを特徴とする請求項１〜請求項３のいずれかに
記載の電解コンデンサ。4. The electrolytic capacitor according to claim 1, wherein the first layer material has a thickness of 0.5 mm or more.
側から０．５ｍｍ以上の面取り又は円弧が形成されてい
ることを特徴とする請求項１〜請求項４のいずれかに記
載の電解コンデンサ。5. The electrolytic capacitor according to claim 1, wherein a chamfer or an arc of 0.5 mm or more is formed from the capacitor element side on the outer peripheral surface of the first layer material. .
ポリマー、ブチルゴム、クロロプレンゴム、ニトリルゴ
ム、天然ゴムであることを特徴とする請求項１〜請求項
５のいずれかに記載の電解コンデンサ。6. The electrolytic capacitor according to claim 1, wherein the material of the second layer is ethylene propylene terpolymer, butyl rubber, chloroprene rubber, nitrile rubber, or natural rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17449195A JPH097900A (en) | 1995-06-15 | 1995-06-15 | Electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17449195A JPH097900A (en) | 1995-06-15 | 1995-06-15 | Electrolytic capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH097900A true JPH097900A (en) | 1997-01-10 |
Family
ID=15979425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17449195A Pending JPH097900A (en) | 1995-06-15 | 1995-06-15 | Electrolytic capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH097900A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5864895A (en) * | 1997-03-10 | 1999-02-02 | Toto Ltd | Handy body washer |
| CN107903457A (en) * | 2017-12-23 | 2018-04-13 | 刘家记 | A kind of high-air-tightness capacitor rubber seal plug |
-
1995
- 1995-06-15 JP JP17449195A patent/JPH097900A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5864895A (en) * | 1997-03-10 | 1999-02-02 | Toto Ltd | Handy body washer |
| CN107903457A (en) * | 2017-12-23 | 2018-04-13 | 刘家记 | A kind of high-air-tightness capacitor rubber seal plug |
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